In this lecture from the Manual for Self Realization: 112 Meditations of the Vijnana Bhairava Tantra, verses 24, Swami Lakshmanjoo reveals the correct way of meditation on breath with “so‘ham” mantra.
Dhāraṇā 1
शरीभैरव उवाच
ऊरधवे पराणो हयधो जीवो
विसरगातमा परोचचरेत ।
उतपततिदवितयसथाने,
भरणादभरिता सथितिः ॥॥
śrī bhairava uvāca
ūrdhve prāṇo hyadho jīvo
visargātmā paroccaret /
utpattidvitayasthāne,
bharaṇādbharītā sthitiḥ // 24 //
Ūrdhve is from upwards, movement...
Swamiji reveals what is the real essence of mantra in Kashmir Shaivism, and how mantras are one with Mother (Kundalini), who is one with Lord Shiva, and how to awaken the divine mother.

3. vidyāśarīrasattā mantrarahasyam //
The secret essence...
In these turbulent times, we feel it is important to share this vital mantra and make it available to all that may desire its benefit. This recording was made as a special lecture during the weekly sangha.
You can watch replays of the Weekly Sanghas on Abhinavagupta's Bhagavad Gita in the Light of Kashmir Shaivism here.
Efficacy of the Aghora mantra...
अघोरेभयोऽथ घोरेभयो घोरघोरतरीभयशच ।
सरवतः शरव सरवेभयो नमसते रुदररूपेभयः ॥
aghorebhyo tha ghorebhyo ghoraghorataribhyasca /
sarvatah sarva...